<template>
  <div class="articles">
    <banner></banner>
    <div class="site-content animate">
      <!-- 文章目录 -->
      <div id="article-menus">
        <menu-tree :menus="menus" child-label="child"></menu-tree>
      </div>
      <main class="site-main">
        <article class="hentry">
          <!-- 文章头部 -->
          <header class="entry-header">
            <!-- 标题输出 -->
            <h1 class="entry-title">看一遍闭着眼都会安装Lua了</h1>
            <hr />
            <div class="breadcrumbs">
              <div id="crumbs">最后更新时间：2020年04月21日</div>
            </div>
          </header>
          <!-- 正文输出 -->
          <div class="entry-content">
            <p>@[TOC]</p>
            <h4 id="引言：">引言：</h4>
            <p>
              Lua
              是一种轻量小巧的脚本语言，能为应用程序提供灵活的扩展和定制功能。
            </p>
            <h4 id="lua-应用场景">Lua 应用场景</h4>
            <ul>
              <li>游戏开发</li>
              <li>独立应用脚本</li>
              <li>Web 应用脚本</li>
              <li>扩展和数据库插件如：MySQL Proxy 和 MySQL WorkBench</li>
              <li>安全系统，如入侵检测系统</li>
            </ul>
            <hr />
            <h4 id="安装">安装</h4>
            <pre><code> curl -R -O http://www.lua.org/ftp/lua-5.3.5.tar.gz #下载
 tar zxf lua-5.3.5.tar.gz #解压
 cd lua-5.3.3 #进入解压文件夹
 make linux test #安装&amp;测试</code></pre>
            <hr />
            <h4 id="安装过程可能出现的问题">安装过程可能出现的问题</h4>
            <ol>
              <li>
                没有gcc命令(lua是C语言编写的，安装时依赖gcc)
                <blockquote>
                  <p>
                    使用<code>which gcc</code
                    >命令可以查看是否有gcc，如果没有使用下面命令进行安装gcc
                    与gcc-c++，
                  </p>
                  <pre><code>yum -y install gcc
yum -y install gcc-c++</code></pre>
                </blockquote>
              </li>
            </ol>
            <hr />
            <ol start="2">
              <li>
                致命错误：readline/readline.h：没有那个文件或目录
                <blockquote>
                  <p>执行如下命令即可:</p>
                  <pre><code>yum install libtermcap-devel ncurses-devel libevent-devel readline-devel</code></pre>
                </blockquote>
              </li>
            </ol>
            <hr />
            <h4 id="安装成功验证">安装成功验证</h4>
            <blockquote>
              <p>
                执行<code>lua -v</code>,出现如下信息代表安装成功<br />
                Lua 5.1.4 Copyright (C) 1994-2008 Lua.org, PUC-Rio
              </p>
            </blockquote>
            <pre><code>lua -v</code></pre>
          </div>
          <!-- 文章底部 -->
          <section-title>
            <footer class="post-footer">
              <!-- 阅读次数 -->
              <div class="post-like">
                <i class="iconfont iconeyes"></i>
                <span class="count">685</span>
              </div>

              <!-- 赞助按钮 -->
              <div class="donate" @click="showDonate = !showDonate">
                <span>赏</span>
                <ul class="donate_inner" :class="{ show: showDonate }">
                  <li class="wedonate">
                    <img src="http://cdn.fengziy.cn/gblog/wexin_pay.png" />
                    <p>微信</p>
                  </li>
                  <li class="alidonate">
                    <img src="http://cdn.fengziy.cn/gblog/ali_pay.jpg" />
                    <p>支付宝</p>
                  </li>
                </ul>
              </div>
              <!-- 文章标签 -->
              <div class="post-tags">
                <i class="iconfont iconcategory"></i>
                <router-link to="/category/web">Web</router-link>
              </div>
            </footer>
          </section-title>

          <!--声明-->
          <div class="open-message">
            <p>
              声明：Gblog博客|版权所有，违者必究|如未注明，均为原创|本网站采用<a
                href="https://creativecommons.org/licenses/by-nc-sa/3.0/"
                target="_blank"
                >BY-NC-SA</a
              >协议进行授权
            </p>
            <p>
              转载：转载请注明原文链接 -
              <a href="/">看一遍闭着眼都会安装Lua了</a>
            </p>
          </div>
          <!--评论-->
          <div class="comments">
            <comment
              v-for="item in comments"
              :key="item.comment.id"
              :comment="item.comment"
            >
              <template v-if="item.reply.length">
                <comment
                  v-for="reply in item.reply"
                  :key="reply.id"
                  :comment="reply"
                ></comment>
              </template>
            </comment>
          </div>
        </article>
      </main>
    </div>
  </div>
</template>

<script>
import Banner from "@/components/banner";
import sectionTitle from "@/components/section-title";
import comment from "@/components/comment";
import menuTree from "@/components/menu-tree";
import { fetchComment } from "../api";
export default {
  name: "articles",
  data() {
    return {
      showDonate: false,
      comments: [],
      menus: [],
    };
  },
  components: {
    Banner,
    sectionTitle,
    comment,
    menuTree,
  },
  methods: {
    getComment() {
      fetchComment()
        .then((res) => {
          this.comments = res.data || [];
        })
        .catch((err) => {
          console.log(err);
        });
    },
    fetchH(arr, left, right) {
      if (right) {
        return arr.filter(
          (item) => item.offsetTop > left && item.offsetTop < right
        );
      } else {
        return arr.filter((item) => item.offsetTop > left);
      }
    },
    // 生成目录
    createMenus() {
      let arr = [];
      for (let i = 6; i > 0; i--) {
        let temp = [];
        let e = document
          .querySelector(".entry-content")
          .querySelectorAll(`h${i}`);
        for (let j = 0; j < e.length; j++) {
          let child = this.fetchH(
            arr,
            e[j].offsetTop,
            j + 1 === e.length ? undefined : e[j + 1].offsetTop
          );
          temp.push({
            h: i,
            title: e[j].innerText,
            id: e[j].id,
            offsetTop: e[j].offsetTop,
            child,
          });
        }
        if (temp.length) {
          arr = temp;
        }
      }
      this.menus = arr;
    },
  },
  mounted() {
    this.createMenus();
  },
  created() {
    this.getComment();
  },
};
</script>
<style scoped lang="less">
.site-content {
  position: relative;
  .site-main {
    padding: 80px 0 0 0;
  }
}
#article-menus {
  position: sticky;
  top: 0;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  border-radius: 3px;
  padding: 15px;
  width: 300px;
  transform: translateX(-120%) translateY(150px);
  font-size: 14px;
}
article.hentry {
  .entry-header {
    .entry-title {
      font-size: 23px;
      font-weight: 600;
      color: #737373;
      margin: 0.67em 0;

      &:before {
        content: "#";
        margin-right: 6px;
        color: #d82e16;
        font-size: 20px;
        font-weight: 600;
      }
    }

    hr {
      height: 1px;
      border: 0;
      background: #efefef;
      margin: 15px 0;
    }

    .breadcrumbs {
      font-size: 14px;
      color: #d2d2d2;
      text-decoration: none;
      margin-bottom: 30px;
    }
  }

  .entry-content {
  }

  footer.post-footer {
    width: 100%;
    padding: 20px 10px;
    margin-top: 30px;
    height: 65px;
    position: relative;
    i {
      font-size: 18px;
      margin-right: 5px;
    }
    .post-like {
      float: right;
      margin: 7px 0 0 20px;
    }

    .post-share {
      float: right;
      list-style: none;
      margin-right: 20px;
    }

    .donate {
      float: left;
      line-height: 36px;
      border-radius: 100%;
      -webkit-border-radius: 100%;
      -moz-border-radius: 100%;
      border: 1px solid #2b2b2b;
      &:hover {
        border: 1px solid goldenrod;
        span {
          color: goldenrod;
        }
      }
      span {
        color: #2b2b2b;
        padding: 10px;
        position: relative;
        cursor: pointer;
      }

      .donate_inner {
        display: none;
        margin: 0;
        list-style: none;
        position: absolute;
        left: 80px;
        top: -40px;
        background: #fff;
        padding: 10px;
        border: 1px solid #ddd;
        box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
        border-radius: 3px;
        &.show {
          display: block;
        }
        li {
          float: left;
        }

        img {
          width: 100px;
        }
        p {
          text-align: center;
          font-size: 15px;
          color: #d2d2d2;
          line-height: 1rem;
        }
      }

      .donate_inner:after,
      .donate_inner:before {
        content: "";
        position: absolute;
        left: 0;
        bottom: 45%;
        margin-left: -8px;
        border-top: 8px solid transparent;
        border-bottom: 8px solid transparent;
        border-right: 8px solid #fff;
      }

      .donate_inner:before {
        left: -1px;
        border-right: 8px solid #ddd;
      }
    }

    .post-tags {
      margin: 7px 0 0 20px;
      float: left;
      text-transform: uppercase;
      a:hover {
        color: #ff6d6d;
      }
    }
  }
  .open-message {
    margin: 50px 0;
    position: relative;
    background: #2b2b2b;
    padding: 10px 30px;
    border-radius: 3px;
    font-size: 14px;
    color: #fff;
    &:after {
      content: "";
      border-left: 10px solid transparent;
      border-right: 10px solid transparent;
      border-bottom: 10px solid #2b2b2b;
      position: absolute;
      top: -8px;
      left: 48%;
    }
    p {
      margin: 10px 0;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }
    a {
      color: #a0dad0;
      padding: 0 5px;
    }
  }
}
</style>
